import { Component,OnInit } from '@angular/core';

import { Hero } from './Hero'
import {HeroService} from './hero.service'

@Component({
  selector: 'my-heroes',
  styles:[`
    .selected {
      background-color: #CFD8DC !important;
      color: white;
    }
    .heroes {
      margin: 0 0 2em 0;
      list-style-type: none;
      padding: 0;
      width: 15em;
    }
    .heroes li {
      cursor: pointer;
      position: relative;
      left: 0;
      background-color: #EEE;
      margin: .5em;
      padding: .3em 0;
      height: 1.6em;
      border-radius: 4px;
    }
    .heroes li.selected:hover {
      background-color: #BBD8DC !important;
      color: white;
    }
    .heroes li:hover {
      color: #607D8B;
      background-color: #DDD;
      left: .1em;
    }
    .heroes .text {
      position: relative;
      top: -3px;
    }
    .heroes .badge {
      display: inline-block;
      font-size: small;
      color: white;
      padding: 0.8em 0.7em 0 0.7em;
      background-color: #607D8B;
      line-height: 1em;
      position: relative;
      left: -1px;
      top: -4px;
      height: 1.8em;
      margin-right: .8em;
      border-radius: 4px 0 0 4px;
    }
  `],
  template:`
            <h2>My Heroes!</h2>
            <ul class="heroes">
              <li *ngFor="let hero of heroes" 
                  [class.selected]="hero === selectedHero"
                  (click)="onSelect(hero)">
                <span class="badge">{{hero.id}}</span>{{hero.name}}
              </li>
            </ul>
            <hero-detail [hero]="selectedHero"></hero-detail>`
})
/*
* ngFor前的*代表Li及其子元素组成了一个主控模板
*
* */


export class HeroesComponent implements OnInit{

  constructor(
    private heroService:HeroService
  ){
  }


  heroes:Hero[]
  selectedHero:Hero

  ngOnInit () : void {
    this.getHeroes()
  }
  onSelect(hero:Hero) :void {
    this.selectedHero = hero
    console.log(hero.name)
  }

   getHeroes():void {
    this.heroService.getHeroes().then(heroes => this.heroes = heroes)
  }
}
